Connect your Wallet, you will be asked to change the network to Polygon if you are connected to other network.
If you used the link above, then your output currency will already be selected as LUXY. If not, click "Select token" and copy & paste the $LUXY contract address: 0xD4945a3D0De9923035521687D4bf18cC9B0c7c2A
Now Input the amount of USDC you want to swap, then click “Swap”.
Approve the transaction in your wallet and you’re all set to receive your LUXY tokens!